.rtop, .rbottom {
    display: block
}

.rtop *, .rbottom * {
    display: block;
    height: 1px;
    overflow: hidden
}

.r1 {
    margin: 0 5px
}

.r2 {
    margin: 0 3px
}

.r3 {
    margin: 0 2px
}

.r4 {
    margin: 0 1px;
    height: 2px
}

.rs1 {
    margin: 0 2px
}

.rs2 {
    margin: 0 1px
}